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Re: [TCML] Tesla coil spark gap dies away AFTER working

I've had the best luck using one similar to the first one shown. I use a PVC pipe and a shop vac. The only warning is I melted to PCV at high power, so I rebuilt it with all copper except the tee, which is PVC. It's never melted even at 25 kVA. Other forms have worked at lower power, but need cooling to run continuously.

I have a 3 phase ARSG, but fried two VFDs and only have one left, so I just use a static for now. The shop vac can be used as a blown gap or a sucker gap, and is hooked up to a variac to adjust the vac speed.




________________________________
 From: matty mcqueeney <matty_queeney@xxxxxxxxxxxxx>
To: "tesla@xxxxxxxxxx" <tesla@xxxxxxxxxx> 
Sent: Tuesday, April 1, 2014 6:57 AM
Subject: [TCML] Tesla coil spark gap dies away AFTER working
 

Hi everyone,
I tested my tesla coil yesterday and it worked brilliantly, However after a while the sparks started to die away.
The spark gap I use is similar to the one below 
https://www.google.co.uk/search?q=static+spark+gap&rlz=1C1CHFX_en-GBGB451GB451&espv=210&es_sm=122&tbm=isch&imgil=NWnKp-waegpo3M%253A%253Bhttps%253A%252F%252Fencrypted-tbn2.gstatic.com%252Fimages%253Fq%253Dtbn%253AANd9GcQ2JuOAoqZ_hysRtikPUS02F5iqJfou3s420mxZljldrdHUHmAs%253B640%253B366%253BALVlAI-_8sEZyM%253Bhttp%25253A%25252F%25252Fwww.teslacoildesign.com%25252Fconstruction.html&source=iu&usg=__ehjc7fNIUcOTpWPuz5o-zTDUOLI%3D&sa=X&ei=spo6U-29Ga3s0gWY9oCwDw&ved=0CDsQ9QEwAw#facrc=_&imgdii=_&imgrc=AchLHojuxBwHJM%253A%3BUaN-2DPwohW_nM%3Bhttp%253A%252F%252Flab.dereklow.co%252Fwp-content%252Fuploads%252Fteslacoil-31-470x328.jpg%3Bhttp%253A%252F%252Flab.dereklow.co%252Fspark-gap-tesla-coil%252F%3B470%3B328
I do not use a fan to cool it down either.
I was wondering if you knew any reason why the spark gap was dieing away?
Thanks Matthew.                           
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